Division 2.5 Target conditions

The sound emission shall be measured in each valid gear ratio at the four test points as specified below.

The first test point P₁ is defined by using an entry speed v_AA of 20 km/h. If a stable acceleration condition cannot be achieved, the speed shall be increased in steps of 5 km/h until a stable acceleration is reached.

The fourth test point P₄ is defined by the maximum vehicle speed at BB' in that gear ratio within the boundary conditions in accordance with point 2.3.

The other two test points are calculated using the following formula:

Test Point P_j: v_{BB_j} = v_{BB_1} + ((j – 1)/3) * (v_{BB_4 – vBB_1}) for j = 2 and 3

Where:

Tolerance for v_{BB_j}: ±3 km/h

For all test points the boundary conditions as specified in point 2.3 shall be met.